The main symptoms of rhinitis are sneezing, runny nose, nasal obstruction and watery eyes, etc. In some cases of rhinitis, it can even cause headache symptoms. In principle, rhinitis itself does not cause symptoms such as thirst and dry mouth. If rhinitis causes nasal congestion and high edema of the nasal mucosa leading to complete nasal non-ventilation, when you need to open your mouth to breathe, this may cause symptoms such as thirst and dry mouth. Some people may even experience sleep snoring, open-mouth breathing causing obstructive sleep apnea syndrome, or even the possibility of hypertension, diabetes, etc. So after rhinitis, if the symptoms are more serious, you should seek medical attention in time to avoid the occurrence of related complications.